Electric-quadrupole transition-rate measurement of a highly charged ion in an electron-beam ion trap using pulsed laser excitation from a metastable state
PHYSICAL REVIEW A(2023)
Abstract
We present the lifetime measurement of the (4d(3/2)(-1)5s)(J=2) state in Pd-like I7+, which predominantly decays to the (4d(10))(J=0) ground state by an electric-quadrupole transition modified by strong spin-orbit mixing. We measure this microsecond-order lifetime in an electron-beam ion trap using pulsed laser excitation from a metastable state which is continuously populated by electron collisions. The measured lifetime provides a new benchmark for relativistic atomic structure calculations with d-state electrons.
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Key words
laser excitation,electric-quadrupole,transition-rate,electron-beam
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